Detections
Analytics
OpenSSL 1.0.2 < 1.0.2zc Vulnerability
medium Nessus Plugin ID 200206
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Synopsis
The remote service is affected by a vulnerability.Description
The version of OpenSSL installed on the remote host is prior to 1.0.2zc. It is, therefore, affected by a vulnerability as referenced in the 1.0.2zc advisory.- There is a carry propagation bug in the MIPS32 and MIPS64 squaring procedure. Many EC algorithms are affected, including some of the TLS 1.3 default curves. Impact was not analyzed in detail, because the pre-requisites for attack are considered unlikely and include reusing private keys. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH private key among multiple clients, which is no longer an option since CVE-2016-0701. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0.0. It was addressed in the releases of 1.1.1m and 3.0.1 on the 15th of December 2021. For the 1.0.2 release it is addressed in git commit 6fc1aaaf3 that is available to premium support customers only. It will be made available in 1.0.2zc when it is released. The issue only affects OpenSSL on MIPS platforms. Fixed in OpenSSL 3.0.1 (Affected 3.0.0). Fixed in OpenSSL 1.1.1m (Affected 1.1.1-1.1.1l). Fixed in OpenSSL 1.0.2zc- dev (Affected 1.0.2-1.0.2zb). (CVE-2021-4160)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to OpenSSL version 1.0.2zc or later.See Also
http://www.nessus.org/u?bcb95c72
Plugin Details
Severity: Medium
ID: 200206
File Name: openssl_1_0_2zc.nasl
Version: 1.2
Type: combined
Agent: windows, macosx, unix
Family: Web Servers
Published: 6/7/2024
Updated: 10/7/2024
Configuration: Enable thorough checks
Supported Sensors: Continuous Assessment, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2021-4160
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.2
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:openssl:openssl
Required KB Items: installed_sw/OpenSSL
Exploit Ease: No known exploits are available
Patch Publication Date: 1/28/2022
Vulnerability Publication Date: 1/28/2022
Reference Information
CVE: CVE-2021-4160
IAVA: 2021-A-0602-S